import java.util.Scanner;

public class Test {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        char net = sc.next().charAt(0);
        if(net >= 'a' && net <= 'z') {
            net -= 32; //大写字母和小写字母之间相隔的数字是32，比如：a是97，A是65.
            System.out.println(net);
        } else if(net >= 'A' && net <= 'Z'){
            System.out.println(net);
        } else {
            System.out.println("输入错误");
        }
    }
}
